grub/util/misc.c
okuji 1f5ab4280a 2003-01-31 Yoshinori K. Okuji <okuji@enbug.org>
* kern/i386/pc/lzo1x.S: New file.

	* util/i386/pc/pupa-mkimage.c: Include lzo1x.h.
	(compress_kernel): New variable.
	(generate_image): Heavily modified to support compressing a
	large part of the core image.

	* util/misc.c (pupa_util_read_image): Fix a file descriptor
	leak.
	(pupa_util_load_image): New function.

	* kern/i386/pc/startup.S: Include pupa/machine/kernel.h.
	(pupa_compressed_size): New variable.
	(codestart): Enable Gate A20 here.
	Decompress the compressed part of the core image.
	Rearrange the code to put functions and variables which are
	required for initialization in the non-compressed part.
	Include lzo1x.S.

	* kern/i386/pc/init.c (pupa_machine_init): Don't enable Gate A20
	here.

	* include/pupa/util/misc.h (pupa_util_write_image): Declared.

	* include/pupa/i386/pc/kernel.h
	(PUPA_KERNEL_MACHINE_COMPRESSED_SIZE): New macro.
	(PUPA_KERNEL_MACHINE_INSTALL_DOS_PART): Increased by 4.
	(PUPA_KERNEL_MACHINE_INSTALL_BSD_PART): Likewise.
	(PUPA_KERNEL_MACHINE_PREFIX): Likewise.
	(PUPA_KERNEL_MACHINE_RAW_SIZE): New macro.

	* conf/i386-pc.rmk (pupa_mkimage_LDFLAGS): New variable.

	* genmk.rb (Image#rule): Put LDFLAGS at the end of a line.
	(Utility#rule): Likewise.

	* configure.ac: Check if LZO is available.
2003-01-31 03:26:56 +00:00

200 lines
3.6 KiB
C

/*
* PUPA -- Preliminary Universal Programming Architecture for GRUB
* Copyright (C) 2002,2003 Yoshinori K. Okuji <okuji@enbug.org>
*
* PUPA is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with PUPA; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <pupa/util/misc.h>
#include <pupa/mm.h>
#include <pupa/term.h>
char *progname = 0;
int verbosity = 0;
void
pupa_util_info (const char *fmt, ...)
{
if (verbosity > 0)
{
va_list ap;
fprintf (stderr, "%s: info: ", progname);
va_start (ap, fmt);
vfprintf (stderr, fmt, ap);
va_end (ap);
fputc ('\n', stderr);
}
}
void
pupa_util_error (const char *fmt, ...)
{
va_list ap;
fprintf (stderr, "%s: error: ", progname);
va_start (ap, fmt);
vfprintf (stderr, fmt, ap);
va_end (ap);
fputc ('\n', stderr);
exit (1);
}
void *
xmalloc (size_t size)
{
void *p;
p = malloc (size);
if (! p)
pupa_util_error ("out of memory");
return p;
}
void *
xrealloc (void *ptr, size_t size)
{
ptr = realloc (ptr, size);
if (! ptr)
pupa_util_error ("out of memory");
return ptr;
}
char *
xstrdup (const char *str)
{
size_t len;
char *dup;
len = strlen (str);
dup = (char *) xmalloc (len + 1);
memcpy (dup, str, len + 1);
return dup;
}
char *
pupa_util_get_path (const char *dir, const char *file)
{
char *path;
path = (char *) xmalloc (strlen (dir) + 1 + strlen (file) + 1);
sprintf (path, "%s/%s", dir, file);
return path;
}
size_t
pupa_util_get_image_size (const char *path)
{
struct stat st;
pupa_util_info ("getting the size of %s", path);
if (stat (path, &st) == -1)
pupa_util_error ("cannot stat %s", path);
return st.st_size;
}
char *
pupa_util_read_image (const char *path)
{
char *img;
FILE *fp;
size_t size;
pupa_util_info ("reading %s", path);
size = pupa_util_get_image_size (path);
img = (char *) xmalloc (size);
fp = fopen (path, "rb");
if (! fp)
pupa_util_error ("cannot open %s", path);
if (fread (img, 1, size, fp) != size)
pupa_util_error ("cannot read %s", path);
fclose (fp);
return img;
}
void
pupa_util_load_image (const char *path, char *buf)
{
FILE *fp;
size_t size;
pupa_util_info ("reading %s", path);
size = pupa_util_get_image_size (path);
fp = fopen (path, "rb");
if (! fp)
pupa_util_error ("cannot open %s", path);
if (fread (buf, 1, size, fp) != size)
pupa_util_error ("cannot read %s", path);
fclose (fp);
}
void
pupa_util_write_image (const char *img, size_t size, FILE *out)
{
pupa_util_info ("writing 0x%x bytes", size);
if (fwrite (img, 1, size, out) != size)
pupa_util_error ("write failed");
}
void *
pupa_malloc (unsigned size)
{
return malloc (size);
}
void
pupa_free (void *ptr)
{
free (ptr);
}
void *
pupa_realloc (void *ptr, unsigned size)
{
return realloc (ptr, size);
}
void
pupa_stop (void)
{
exit (1);
}
void
pupa_putchar (int c)
{
putchar (c);
}